C1.7.1

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1. What is the mantle?

  • The mantle is almost entirely solid but parts of it can flow very slowly, under the surface (3000km) and goes almost halfway to the centre of the earth.
  • The mantle is almost entirely solid but parts of it can flow very slowly, under the surface (3000km) and goes almost quarter way to the centre of the earth.
  • The mantle is almost entirely solid but parts of it can flow very slowly, under the surface (2000km) and goes almost halfway to the centre of the earth.
  • The mantle is almost entirely liquid but parts of it can flow very slowly, under the surface (3000km) and goes almost halfway to the centre of the earth.
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2. What is the core?

  • The core (roughly half the diameter of the Earth) has a solid outer part and liquid inner part, with a high proportion of the magnetic materials metals, iron and nickel.
  • The core (roughly half the diameter of the Earth) has a liquid outer part and solid inner part, with a high proportion of the magnetic materials metals, iron and nickel.
  • The core (roughly quarter the diameter of the Earth) has a liquid outer part and solid inner part, with a high proportion of the magnetic materials metals, iron and nickel.
  • The core (roughly half the diameter of the Earth) has a liquid outer part and solid inner part, with a high proportion of the magnetic materials metals, copper and nickel.

3. Why should we be careful not to waste the Earth's resources?

  • As all of the raw materials and other resources that we depend on come from crust, ocean and atmosphere and so are too natural and good for us
  • As all of the raw materials and other resources that we depend on come from crust, aliens and the atmosphere and so are limited.
  • As all of the raw materials and other resources that we depend on come from crust, ocean and atmosphere and so are limited.
  • As all of the raw materials and other resources that we depend on come from crust, ocean and atmosphere and so are unlimited

4. What is the crust?

  • • The crust is a very thin layer at the surface of the earth that is the same throughout.
  • • The crust is a very thin layer at the surface of the earth that varies in thickness between 10km and 70km.
  • The crust is a very thin layer at the surface of the earth that varies in thickness between 5km and 70km.
  • • The crust is a very thin layer at the surface of the earth that varies in thickness between 5km and 65km.

5. What is the atmosphere?

  • The atmosphere surrounds the Earth. Most of the air is within 20km of the surface and most of the atmosphere is within 100km of the surface
  • The atmosphere surrounds the Earth. Most of the air is within 10km of the surface and all of the atmosphere is within 100km of the surface
  • The atmosphere surrounds the Earth. Most of the air is within 10km of the surface and most of the atmosphere is within 100km of the surface.
  • The atmosphere surrounds the Earth. Most of the air is within 10km of the surface and most of the atmosphere is within 3000km of the surface

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